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C. W. VOLLMANN.

AMMONIA CONDENSER.

APPLICATION FILED OCT. 4, I915.

Patented Aug. 1, 1916.

E li T '1) AMMONIA-CONDENSER.

Specification of Letters Patent.

Patcntedriug. 1, rain.

Application filed October 4, 1915. Serial No. 54,074.

T all whom it may concern Be it known that I, CARL W. VOLLMANN, a subject of the King of Great Britain, residing in the city ofMontreal, Province of Quebec, Dominion of Canada, have invented certain new and useful Improvements in Ammonia-Condensers; and I do hereby declare that the followingv is a full, clear, and exact description thereof.

It is a well known fact that at atmosphericpressui'e ammonia is a gas, and it is common practice to liquefy it by the successive action of compression and condensation, the latter action being done by subjecting the compressed gas to the influence of water; and'the object of my invention is to utilize the principle of accelerating the condensation by mixing the ammonia gas with a liquid body of the same fluid.

To this end the invention may be said to consist, broadly, of the combination with an ammonia condenser coil, of a mixing cham-- ber included in the circuit of the coil and constructed and arranged to receive the ammonia gasand 1n ect it in a commmuted state into the liquefied ammonia within the coil and, furthermore, to inject it in such a manner that the impelling force of the injection will accelerate mixing of the fluids and consequently the condensation of the 'as.

b For full comprehension however, of my invention reference must be had to the ac companying drawings forming a part of this specification in which similar reference characters indicate the same parts, and wherein:

Figure 1 is a side elevation of a condenser coil furnished with my invention; Fig. 2 is a plan view thereof; Fig. 3 is a plan view of my improved attachment whereby the intimate mixture of the gas and fluid is secured; Fig. 4 is a longitudinal vertical sectional view taken online G D Fig. 3; Fig. 5 is a vertical sectional view taken on line E F Fig. 4; and Fig. 6 is a horizontal sectional view taken on line A B Fig. 4.

The condenser coil I prefer to use c0ntains a closed circuit from which the liquefied ammonia is'drawn for distribution to the brine tank coils at a point above the bottom thereof, and I include my mixer below the level at which the liquid is taken.

The coil, as shown in Figs. 1 and 2, consists of a bank of pipes 2 connected in series by return bends 3 uniting all the pipes in alternate pairs at the opposite ends respec tively of the coil, with the exception of the second and third pipes from the bottom at the right hand end of Fig. 1, these particu lar pipes being connected by my mixing chamber, while the bottom pipe at the same endof the coil is connected by a pipe 4 to the discharge of-the compressor (no shown) and the topmost pipe at the same end of the C01]. is connected by a pipe 5 to a discharge nozzle 6 at the top of the mixer. This pipe 5 has an air vent 7 controlled by a valve 8. The liquid ammonia is drawn from the coil for distribution to the ammonia coils in the brine tanks through a pipe 10 which is controlled by a valve 12. The water for condensing purposes is distributed by the common device including a distributing trough fed by water pipes. 16 controlled by a valve 17 and is caught in a tray 18 having a drain 19.

' My improved mixer comprises a casing 20 the upper portion of which is divided by a transverse partition 21 and has the vertical nozzle 6 at one side of the partition and an inlet port 22 for liquid ammonia at the other side, while a gas inlet port 23 is provided at the bottom and beneath the inlet port 22. This casing is narrow with relation to its length and height. A gas inlet pipe 2 1 has rigidly secured upon one end. a bushing 25 adapted to fit into the port 28 which is chambered for the purpose, and the opposite end thereof is closed by a screw plug 26. This pipe is of a length to extend from the inlet port to within close proximity of the inner end of the casing and the portion thereof within the chamber 20 beneath and communicating with the nozzle, has a number of holes 28 in its upper side and a drainage hole 29 in its lower side. The upper portion of the wall of this chamber is in the form of a dome converging to'the nozzle. The pipe 4 conducting the compressed gas is coupled to this pipe 24 which, as shown in Fig. 4, is of slightly smaller bore for the purpose of maintaining a slightly high pres sure of gas in the pipe to prevent the liquid from entering the pipe.

The circuit through my improved condenser is from the compressor and pipe 41 through the lowermost pipe 2 and return bend 3 to pipe 24: of the mixer and thence through pipe 5 to the top pipe 2 of the coil, then in a zig-zag course downwardly through the coil to the port 22 of the mixer Wardly in pipe '5 consists of an intimate mixture of liquid and gas which, during its passage through the upper pipe of the coil,

, changes rapidly into an entirely liquid body. This is due to.the fact that liquefaction of ammonia gas is accelerated by mixing it with liquid ammonia. The effect is that the [gas being injected in very small particles into the liquid gets thoroughly mixed therewith.

What I claim is as follows;

1. A mixer for the purpose set forth comprising a casing having its upper portion divided by a transverse partition and one side of the partition'converging upwardly and terminating in a nozzle and the portion at the other side of the partition having a liquid inlet port; and means whereby ammonia gas is supplied to the bottom of the converged portion of the nozzle.

2. A mixer for the purpose set forth comprising a, casing having its upper portion divided by a transverse partition and one side of the partition converging upwardly and terminating in a nozzle and the portion at the other side of the partition having a liquid inlet port; and means whereby ammonia gas is supplied to the bottom of the converged portion of the nozzle, said means being constructed and arranged to c01nminute the gas discharged therefrom.

3. A mixer for the purpose set forth comprising a casing having its upper portion divided by a transverse partition and one side of the partition converging upwardly and terminating in a nozzle and the portion at the other side of the partition having a liquid inlet port and below the said liquid inlet, a gas inlet port; and a pipe supporting at one end a bushing closing the last-mentioned port and having its inner end closed and extending to the inner end of the casing and having a number of small holes in the upper side thereof beneath the nozzle and a drainage hole in its bottom, the said pipe having an open communication adapted to 'be coupled to the gas supply.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents. Washington, D. C. 

